剪切载荷下圆形和菱形开口层压板承载能力对比研究  

COMPARISON STUDY ON BEARING CAPACITY OF CIRCULAR AND DIAMOND HOLE LAMINATES UNDER SHEAR LOAD

作　　者：高伟 姚雄华 张文军 GAO Wei;YAO XiongHua;ZHANG WenJun(Structural Design and Research Department,AVIC the First Aircraft Institute,Xi′an 710089,China)

机构地区：[1]航空工业第一飞机设计研究院结构设计研究所,西安710089

出　　处：《机械强度》2022年第4期819-824,共6页Journal of Mechanical Strength

摘　　要：基于剪切载荷工况,采用试验和数值计算模拟方法研究含圆形开口、菱形开口复合材料层压板承载能力及其失效模式。研究结果表明:层压板重量相同、开口可达性相同和铺层角度信息相同的前提下,菱形开口层压板承载能力大于圆形开口层压板承载能力;基于非线性连续介质损伤力学(CDM),采用最大应变失效准则预测纤维损伤、三维非线性Puck失效准则预测基体损伤,构建含开口层压板三维有限元模型并进行数值计算模拟,通过与试验结果对比,表明该模型能有效预测含开口层压板承载能力及其失效模式。Based on the shear load case, the bearing capacity and failure mode of composite laminates with circular and diamond holes were studied by test and numerical simulation. The results show: under the premise of the same laminate weight, the same hole accessibility and the same stacking angle information, the load-carrying capacity of the laminate with diamond hole is greater than that of the laminate with circular hole;based on the nonlinear continuum damage mechanics(CDM), the fiber damage is predicted by using the maximum strain failure criterion, and the matrix damage is predicted by using the three-dimensional nonlinear puck failure criterion A three-dimensional finite element model of laminate is established and numerical simulation is carried out. The comparison with the experimental results shows that the model can effectively predict the bearing capacity and failure mode of laminate with hole.

关 键 词：复合材料 层压板 开口 连续介质损伤力学 失效模式 

分 类 号：V214.8[航空宇航科学与技术—航空宇航推进理论与工程]